Well, my first attempt at manual overclocking my Ryzen 1500x to 3.8GHz didn't go so well. I ended up pulling the battery and crying in the corner until it rebooted. MSI's OC Genie has it boosted to 3.7GHz and stable, so I'll stay there.

Still at 1.4v, 3.85GHz seems to be the ceiling. I tried 3.9GHz, but Cinebench forces a shutdown. 3.85 seems pretty stable after several runs, and I am now getting scores of 840-845. CPU temp peaked at 85°C, but was hovering around 81°C with the stock Wraith Spire.